* {
    padding: 0;
    margin: 0;
}

a {
    text-decoration: none;
}

li {
    list-style: none;
}

img {
    border: none;
}

#outBox{
    width: 500px;
    height: 200px;
    border: 1px solid #000;
    padding: 5px;
    margin: 100px auto;
    position: relative;
}

#inBox{
    width: 500px;
    height: 200px;
    overflow: hidden;
    position: relative;
}
#inBox ul{
    width: 3000px;
    position: absolute;
    left: 0px;
    top: 0px;
}

#inBox li{
    float: left;
}

#inBox ol {
    position: absolute;
    right: 10px;
    bottom: 10px;
    line-height: 20px;
    text-align: center;
}

#inBox ol li {
    float: left;
    width: 20px;
    height: 20px;
    background: #fff;
    border: 1px solid #ccc;
    margin-left: 10px;
    cursor: pointer;
}

#inBox ol li.active{
    background-color: yellow;
}

#arr{
    display: none;
}
#arr span{
    width: 30px;
    height: 40px;
    position: absolute;
    left: 5px;
    top: 50%;
    line-height: 40px;
    margin-top: -20px;
    background: #000;
    cursor: pointer;
    text-align: center;
    font-weight: bold;
    font-family: '黑体';
    font-size: 30px;
    color: #fff;
    opacity: 0.3;
    border: 1px solid #fff;
}

#arr #right {
    right: 5px;
    left: auto;
}








